perf: inline references to constant primitive <const> tags

In the transform phase, replace every reference to a `<const>` whose value
is a compile-time primitive (string, number, bigint, boolean, null, or
undefined) with the literal value. Downstream evaluation can then fold
larger expressions and bake the result into the static template output,
and the now-unreferenced binding is pruned entirely.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01G1bgkqJCLUsEz3xsossMCN

Author: DylanPiercey

.changeset/const-fold-primitives.md

@@ -0,0 +1,5 @@
+---
+"@marko/runtime-tags": patch
+---
+
+Inline references to `<const>` tags with statically known primitive values, removing the binding and its reactive signal.

packages/runtime-tags/src/__tests__/fixtures-interop/ambiguous-tags-and-components-dir/sizes.json

@@ -3,7 +3,7 @@
     "template.marko.page.mjs": {
       "total": {
         "min": 921,
-        "brotli": 452
+        "brotli": 453
       },
       "files": {
         "v:template.marko.hydrate-6.js": 104,

packages/runtime-tags/src/__tests__/fixtures-interop/class/sizes.json

@@ -2,7 +2,7 @@
   "dom": {
     "template.marko.page.mjs": {
       "min": 49563,
-      "brotli": 14671
+      "brotli": 14672
     }
   },
   "html": {

packages/runtime-tags/src/__tests__/fixtures-interop/custom-tag-parameters-from-args/sizes.json

@@ -2,8 +2,8 @@
   "dom": {
     "template.marko.page.mjs": {
       "total": {
-        "min": 68022,
-        "brotli": 21118
+        "min": 68015,
+        "brotli": 21132
       },
       "files": {
         "components/custom-tag.marko": 1121,

packages/runtime-tags/src/__tests__/fixtures-interop/interop-basic-class-to-tags/sizes.json

@@ -2,8 +2,8 @@
   "dom": {
     "template.marko.page.mjs": {
       "total": {
-        "min": 65782,
-        "brotli": 20201
+        "min": 65755,
+        "brotli": 20208
       },
       "files": {
         "components/tags-counter.marko": 691,

packages/runtime-tags/src/__tests__/fixtures-interop/interop-basic-tags-to-class/sizes.json

@@ -2,8 +2,8 @@
   "dom": {
     "template.marko.page.mjs": {
       "total": {
-        "min": 67231,
-        "brotli": 20838
+        "min": 67215,
+        "brotli": 20859
       },
       "files": {
         "components/class-counter.marko": 1028,

packages/runtime-tags/src/__tests__/fixtures-interop/interop-class-in-components-in-tags-dir/sizes.json

@@ -2,8 +2,8 @@
   "dom": {
     "template.marko.page.mjs": {
       "total": {
-        "min": 66817,
-        "brotli": 20584
+        "min": 66798,
+        "brotli": 20608
       },
       "files": {
         "tags/components/hello-internal.marko": 941,

packages/runtime-tags/src/__tests__/fixtures-interop/interop-class-to-tags-import/sizes.json

@@ -2,8 +2,8 @@
   "dom": {
     "template.marko.page.mjs": {
       "total": {
-        "min": 65782,
-        "brotli": 20201
+        "min": 65755,
+        "brotli": 20208
       },
       "files": {
         "components/tags-counter.marko": 691,

packages/runtime-tags/src/__tests__/fixtures-interop/interop-event-handler-render-body-tags-to-class/sizes.json

@@ -2,8 +2,8 @@
   "dom": {
     "template.marko.page.mjs": {
       "total": {
-        "min": 67549,
-        "brotli": 20983
+        "min": 67536,
+        "brotli": 20950
       },
       "files": {
         "components/my-button.marko": 1048,

packages/runtime-tags/src/__tests__/fixtures-interop/interop-events-tags-to-class/sizes.json

@@ -2,8 +2,8 @@
   "dom": {
     "template.marko.page.mjs": {
       "total": {
-        "min": 67184,
-        "brotli": 20787
+        "min": 67166,
+        "brotli": 20812
       },
       "files": {
         "components/class-counter.marko": 1043,